Improvement in flour-bolts



D' Jenn` MALL1'N,'or gonroaeo, rumors( Lttersfrtant No. 107,935, dated caoba 4, 1870.

IMPROVEMENT 1N FLouR-BoLrs.

'lhe Schedule referred to in these 'Letters Patent and making part of the same.

To all who'mdt may 'conce-Tn,

iBe itkn'own'that I, J orrN MALLIN, of Chicago, in the count-y of. Cook and Stateoflllinois, have invented .certain new and useful Improvements in Flour-Bolts, of which the following .is` full and complete description, reference being had to f the accompanying drawing making a part of this specilication, in which-'- Figure 1 is a side view of the bolt-ing-chest.

Figure 2 is an end view.

Figure .3 isa longitudinal vertical section.

Y Figurel is auend view.

Like lettersY of reference refer to like parts in the y several views. 'f

The nature of this invention relatesto a deur-boltL ingapparatus.` The objectthereof is to produce from middlingsone or moregrades of our, withoutv rc- `grinding, and by one process of bolting. Y

lIt has further a second object in view, viz.: A more full and complete separation of the our or meal from ,the middlings, for regrinding, therebyproducing from said middlings severalbettcr. grades oflour than. can `be ,madein the ordinary way, as he'reinaftermore fully shown and described. y

A represents the bolt-chest, in which the boltingreels B C and conveyers D,

E, E, 86o., are arranged and operated. i'

It will be observedthat the upper reel is covered,

withthr'ee `grades of cloth, viz.: Nos. 9, 10, and 12, and that the ightsof Vthe conveyer D run' in opposite directions from the center.

It will also be observed that the lower reel' Gis coveredwith several grades of cloth, ranging in neness from the right hand'G upward', and that the flights of the'couveyerlliV immediately under4 the reel have one col'nmon direction. Soualso have the iiights'o'f the conveyer F, the purpose of which will presently be shown.

H, iig. 1, is a conductor, through 'which the middliugs are conveyed into the reel. TheY lower end of said conductor projects into the end of the reel, by means of an elbow,jL,f ig..3. v l s A similar elbow-conductor, J, conveys the middlings into the reel C. Said reels are' made ,to t closely,but not tightly around the intruded end'of the conductors. In the top of the chest are arranged ventilators K L,jig.` 1. A l In the ventilators K are hinged valves M, operated` lfor that purpose. y `In4 the ventilator'L is tted a slide, O, whereby `it can be opened or closed, and the draught regulated, as may be necessary.

from the outside by the rods N, attached to the valvesr 'lhe sides of thechest are partially inclosed by doors' I?, `g.j1.- Said doors consist of a frame, covered with tine bolting-cloth, a portion of which is represented as through the sections ofthe reel covered by Nos.9 and being broken away, in`order that the inside of the chest" may beseen. s Said `doors allow a free induction of air into the chest, whereby it is kept cool, and dampness prevented, and the dust and light particles of branv `carried oiIr frorn'thc' chest.

Q, fig. 2, are openings in the end of the chest for the admission of air. Said holes are 'also covered with bolting-cloth, as are the doors above referred to.

The practicaliperation of this bolting-chest is as follows: l' s The r'niddiings are conveyed into the chest; thence into the bolting-'reel B. g. l', through thel conductor The meal or nest part of the middlings falls 10 cloth, whiclijis then conveyed back by section d' of the conveyerl), the flights of which discharge the flour to the outside of the chest, through the head spout T, figs. 2 and 3, wbereasthe second grade is carried on- `ward bythe motion of the reel, and bolted by N o. l2 f cloth, and which is then conveyed by the iiights of the conveyer D tothe tail ofthe reel, and discharged therefrom through the slide U onto properly-arranged cant-boards, whereas the bran is discharged tothe outside, through a spout for that purpose.

By'this means t'wo grades of flour are' obtained from the midd-lings, without regrinding; the first, a good white our; the second, a little coarser, but,being free' .of bran, will, when reground, produce a good grade of V,whiteiloun VIn the event that only one grade of flour l a is required from the lniddlings, for the purpose of regrinding, and therefrom produce several grades of ilon r,

then the flights of the upper conveyer must all range in one direction, instead of ranging each' way from the center. i

Mln this machine, all tlour from the reground iniddlings' must pass through the meshes of the clot-h, as

the middlings pass on from one number 0f cloth to `another, for dividing or .separating the grades offlour or meal from the middlings and the coarserefuse material. Each number of cloth performs a certain duty. of dust-ing out the'pure, white, heavy particles o four from the middlings, as it is conducted on bythe l'eels motion, and which is conveyed ofi' to each ones respective place or bin by the conveyers E and F v.

The our that falls from the upper reeland head of the lower reel, if so desired, can be taken fronrthe chest through the `slide No. l and spout a, under No. ddcloth, TheA second 'slide is closed, andv the third one opened, conducting pure white flour from Nos. 9 `and 8 clothsfinto spout 11. The fourth slide is' closed, and the fifth one opened for middlings proper from Nos. 7 and V5 cloths, whereas the sixth slide is opened to take away brown' or coarse middlings from No. 34

cloth, last number for taking out the rejected ne bran,

dto., it being solight that it remains upon the top and cornes over the severalgrades of cloth to No. 3, and is discharged through the spout B'.

The slides A referred to are so arranged that, on pushing them in in one direction, they close the opening in the partition C, dividing the conveyers E and F from each other. Said openings are shown in fig. 3.

In the slides are openings corresponding in size to those in the partition, which, when the slides are pushed in, are brought in open relation tothose. in the partition, thereby allowing the` lour to pass through from the upper conveyer to the lower one.

By establishing a current of cool air through the chest from the' outside by means of the cloth doors P, and the ventilators K L, the our is thereby kept cool, and all moisture, dust,and light particles of bran are carried olf, so that no dampness or specking ofthe our can take place within the chest. 4

The current of air thus conveyed through the chest is graduated by the. valves M, which may be opened or closed, as shown in figs. l and 2; also by means of the ventilator L and slide l0. A

By the use of the ventilators above dese'ribed, and the conductors J andI, whereby the flour is conveyed into the bolting-reels, is avoided the speckling of our; hence, the speck-boxes used for the avoidance of such speekling is dispensed with in my bolting-chest, and all speckling wholly avoided. 1

This arrangement ot' reels clothed with several numbers of cloth, and also the arrangement of the conveyers and ventilators, 85o., is equally applicable to sin' gle, halt', or full chest of bolts.

Claim.

for the purpose specified.`

JOHN MALLIN.

- Witnesses:

HENRY SARA'W, n

THOMAS LEDDY, Jr. 

